Designed exclusively for Delta faucets. Cartridge Assembly - MultiChoice(R) 13/14 Series.This Delta Cartridge Assembly is made to provide single-function pressure-balance temperature control and is built for use with a MultiChoice Universal valve body (not included). Pressure balance valve keeps water temperature within a safe 3°F (1.6°C), helping to protect you from sudden changes in hot or cold water pressure. Our faucets and their parts are guaranteed for a lifetime, but just in case you'd like to make some repairs on your own we've made some parts available for you to order.